BGS mineralogy and petrology collection record
| Sample number | MR6956; F745; |
|---|---|
| Sample Donor | Not entered |
| Rock name | Tephrite. 'Original entry: Nepheline Tephrite' |
| Stratigraphy | Not entered |
| Comments | nepheline tephrite, ,Purchase from Droop (Dresden):2239 |
| Locality details | Ruine Blankenstein, Rongstock, Bohemia,surface exposure,Czechoslovakia |
| 50k map sheet | Not entered |
| Map reference | Not entered |
| Year collected | 1903 |
| Bore name | Not applicable |
| Confidentiality | No restrictions |